Monday's rally in Bitcoin (BTC-USD) had a follow-on effect for companies tied to the cryptocurrency. This included Riot Blockchain (RIOT) and MicroStrategy (MSTR), which both posted double-digit percentage gains as Bitcoin climbed back above $40,000.This sector remains in focus on Tuesday, with investors watching movement in Bitcoin.Bitcoin rose Monday after Elon Musk tweeted that Tesla (TSLA) would accept the crypto once the mining process became more environmentally friendly. Meanwhile, famed investor Paul Tudor Jones recommended that everyone should hold 5% of crypto as part of a diversified portfolio.DraftKings (DKNG) is falling in premarket action, losing about 7% of its value. Hindenburg Research has issued a short call on the stock, reportedly raising concerns about the SPAC process that brought DraftKings public.Drug development remains in focus Tuesday. Sage Therapeutics (SAGE) fell sharply in pre-market trading after its experimental drug showed disappointing data in a clinical trial. The depression treatment met its
